Optical navigating apparatus and computer readable media can perform optical navigating method

摘要

An optical navigating apparatus, which comprises: a light source, for illuminating a surface to generate an image; an image sensor, for catching pictures of the image; and a controller, for computing a first estimating speed of the optical navigating apparatus according to a first picture of the pictures and a second picture after the first picture. The controller controls at least one of parameters as following according to the first estimating speed: a non-illuminating frequency that the light source does not illuminate pictures after the second picture; a non-catching frequency that the image sensor does not catch pictures after the second picture; a computing frequency that the controller computes pictures after the second picture, which are caught by the image sensor; and a searching range for pictures after the second picture.

主权项

1. An optical navigating apparatus, comprising:
a light source, for illuminating a surface to generate an image; an image sensor, for catching pictures of the image; and a controller, for computing a first estimating speed of the optical navigating apparatus according to a first picture of the pictures and a second picture after the first picture, for defining a first group of pictures according to the first estimating speed, wherein the first group of pictures comprises a plurality of pictures that the second picture is included in and has a picture number defining the number of pictures in the first group of pictures, and for determining whether a selected picture of the first group of pictures is the last picture within the first group of pictures; wherein the controller controls at least one of parameters as following according to the first estimating speed:
a non-illuminating frequency that the light source does not illuminate the pictures in the first group of pictures;a non-catching frequency that the image sensor does not catch the pictures in the first group of pictures;a computing frequency that the controller computes the pictures in the first group of pictures, which are caught by the image sensor; anda searching range for the pictures in the first group of pictures;wherein the controller applies at least one of the non-illuminating frequency, the non-catching frequency, the computing frequency and the searching range, which are controlled according to the first estimating speed, to control all the pictures for the first group of pictures.